Agitator



Dea 25,- 1934. s, J, MCCARROLL 1,985,191

Filed i151?? 1954 2 sheets-sheet 1 2/ 1, /ff EL?? /3 /4L I /Z 'v5 f l,www 5 d /7 4 Z O\ l- 2 l l Y T/6 y Inventor Z4 fic/ne] /W'Cr/'o/ ,f1llorney Dec. 25, 1934. s. J. MCcARRoLL 1,985,791

AGITATOR Filed April 3, 1934 2 Sheets-Sheet 2 A Inventor @@Mdoih Y,/Illomey- Patented Dec. 25, 1934 UNITED STATES PATENT OFFICE AGITAToRwood, S. Dak.

Application April 3, 1934, Serial No. 718,861

1 Claim.

This invention appertains to new and useful improvements in agitatorsparticularly adapted to provide an agitator wherein wet pulps orsuspensions of ground ore or minerals can be treated in a manner whichwill eliminate the possibility of short circuiting of the material. Byshort circuiting is meant the tendency for a material which is suspendedin a liquid to pass directly through the machine without remaining inthemachine long enough for thorough mixing or dissolution of its componentparts.

Another important object of the present invention is to provide amachine wherein the material will be thoroughly agitated and treatedwithout materially increasing the cost of the machine over types now inuse.

Other important objects and advantages of the invention will becomeapparent to the reader of the following specification.

In the drawings:

Figure 1 represents a vertical sectional view through the apparatus. Y

Figure 2 represents a horizontal sectional view taken substantially online 2--2 of Figure 1.

als designate like parts, it can be seen in Figure 1 that numeral 5represents the tank mounted upon suitable supports 6. The tank 5 isprovided with a conical shaped bottom 7 having a valve seat 8 in thebottom thereof against which the valve element 9 is engageable. Thisvalve element 9 is provided with a stem 10 extending below the machineand capable of being operated in any manner desired. A chute 11 extendsfrom the bottom of the tank.

Frame structures 12-13 are mounted upon the tank 5 and provided withvertically spaced and aligned bearings 14-14 through which the elongatedvertical shaft 15 extends, this shaft extending downwardly into the tankto terminate adjacent the valve element 9.

Bracket members 16 support vertically spaced conical shaped bales 17 inthe tank 5, these bafes being open at their apices and spaced from theside Walls of the tank 5 at their peripheries.

Below the lowermost baffle 17 an impeller 18 is provided on the shaft15, while in the confines of the baiiies 17 and immediately below theopen apex of the baffle above the same is a second impeller 19 for theshaft 15, while athird impeller 20 is located on the shaft 15 within theconnes of the uppermost bale 17. A pulley 21 is provided on the shaft 15below the uppermost bearing 14 and, of course, the shaft, with the useof this pulley, can be driven by a belt.

Adjacent the top of the tank 5 is a discharge spout 22, while numeral 23represents the inlet conduit which extends downwardly on the inside ofthe tank along the side wall thereof to terminate at its discharge end24 adjacent the valve 9.

The lower sides of the bafes 17 are provided with radially disposed ns25 which serve to prevent a whirling action of the material when it is othrown outwardly by the impellers 18, 19 and 20.

It can now be seen that the pulp is fed into the machine through theconduit 23. As the pulp comes in contact with the bottom impeller 18, itis given a rotary and outward motion which forces the pulp against theside wall of the tank. The constant inflow of fresh pulp forces the pulpwhich rst enters upwardly and into the rst cone along a path designatedby the arrows in Figure 1. The pulp divides here and part is drawn downthrough the bottom of the cone by the impeller 18. The rest of thedivided pulp is given a rotary and outward motion and rises to iiow intothe uppermost' cone. Here it divides again and part of the pulp is drawndown throu h the bottom of the n l t e ti ed Referring to the drawingswherein like numerg Co e as m n on by the impellerv 19. The remainingpulp which does not return 'through the bottom of the cone is agitatedin this last mentioned cone by the 30 impeller 20 and subsequentlydischarged through the spout 22.

While the foregoing specification sets forth the invention in specificterms, it is to be understood that numerous changes in the shape, sizeand materials may be resorted to without departing from the spirit andscope of the invention as claimed hereinafter.

Having described the invention, what is claimed as new iszi An agitatorof the character described comprising a tank having an inlet pipeterminating adjacent the lower outlet end thereof, a plurality ofinverted conical shaped bailles in the tank, each baiile being providedwith an opening at its apex portion, a vertically disposed shaft in thetank extending through the openings in the baiiies, said bales havingtheir edge portions in vertical spaced relation to each other and spacedfrom the inside of the tank to provide a by-pass for material beingtreated in the tank, and an impeller on the shaft below each of thebaiiies at the apex portion thereof.

SIDNEY JAMES MCCARROLL. 55

